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US 5,509,879 AGranted
Portable exerciser with a constant resistance
OwnerIgnacio Lanzagortainventor
Life of this patent
Estimating the term…
Abstract
A portable exerciser having an adjustable constant resistance to employment thereof. The exerciser includes a shaft and a housing slidably disposed on the shaft. A gear in the housing engages the shaft and a member frictionally engages the gear so that movement of the housing relative to the shaft rotates the gear against the friction force applied by the member.
Claims18
A portable exercise device comprising:
- a housing;
- a shaft slidably disposed through said housing;
- a gear rotatably disposed within said housing, said gear engaging said shaft and rotating in a first direction when said housing moves in a second direction relative to said shaft;
- a first member frictionally coupled to said gear when said gear rotates in the first direction;
- a second member frictionally coupled to said gear when said gear rotates in a third direction and wherein
- said gear rotates in the third direction when said housing moves in a fourth direction relative to said shaft;
- and
- said first member is frictionlessly coupled to said gear when said gear rotates in the third direction.
5 more elements
A portable exercise device comprising:
- a housing;
- a shaft slidably disposed through said housing,
- wherein said shaft has a first end, a second end, a first stopper mounted on said first end and a second stopper mounted on said second end;
- a gear rotatably disposed within said housing, said gear engaging said shaft and rotating in a first direction when said housing moves in a second direction relative to said shaft;
- a first member frictionally coupled to said gear when said gear rotates in the first direction;
- a first handle extending from said first stopper and
- a second handle extending from said housing.
4 more elements
A portable exercise device comprising:
- a housing;
- a shaft slidably disposed through said housing;
- a gear rotatably disposed within said housing said gear engaging said shaft and rotating in a first direction when said housing moves in a second direction relative to said shaft;
- a first member frictionally coupled to said gear when said gear rotates in the first direction;
- and
- a plurality of rollers mounted inside said housing for assisting said housing to slide along said shaft.
3 more elements
A portable exercise device comprising:
- a housing;
- a shaft slidably disposed through said housing;
- a gear rotatably disposed within said housing, said gear engaging said shaft and rotating in a first direction when said housing moves in a second direction relative to said shaft;
- a first member frictionally coupled to said gear when said gear rotates in the first direction;
- an axle fixedly coupled to said gear and
- a first disk fixedly coupled to said axle when said gear rotates in the first direction, said first disk frictionally coupled to said first member.
3 more elements
A portable exercise device comprising:
- a shaft having a side and teeth disposed on said side;
- a first handle fixedly disposed on said shaft;
- and
- a housing slidably disposed on said shaft and engaging said teeth, said housing having a second handle fixedly disposed thereon.
1 more element
A portable exercise device comprising:
- a shaft having a furrow;
- a housing slidably moveable along said furrow of said shaft;
- and
- means for altering the friction between said housing and said shaft;
- and
- a plurality of rollers mounted inside said housing for assisting said housing to slide along said furrow of said shaft.
3 more elements
A portable exercise device comprising:
- a shaft having a furrow;
- a housing slidably moveable along said furrow of said shaft;
- and
- means for altering the friction between said housing and said shaft,
- wherein the furrow includes teeth and the altering means includes a gear, said gear rotatably engaged with said teeth and
- wherein said gear rotates in a first direction when said housing moves in a second direction relative to said shaft and
- said altering means includes an axle fixedly coupled to said gear, a first disk fixedly coupled to said axle when said gear rotates in the first direction and a first flexible band frictionally coupled to said first disk.
4 more elements
Dependencies are inferred from the claim text.